<?php

/*
	[UCenter] (C)2001-2099 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$Id: xml.class.php 1059 2011-03-01 07:25:09Z monkey $
*/

function xml_unserialize(&$xml , $isnormal = FALSE) {

	$xml_parser = new XML ( $isnormal );
	$data = $xml_parser->parse ( $xml );
	$xml_parser->destruct ();
	return $data;
}

function xml_serialize($arr , $htmlon = FALSE , $isnormal = FALSE , $level = 1) {

	$s = $level == 1 ? "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\r\n<root>\r\n" : '';
	$space = str_repeat ( "\t", $level );
	foreach ( $arr as $k => $v ) {
		if (! is_array ( $v )) {
			$s .= $space . "<item id=\"$k\">" . ($htmlon ? '<![CDATA[' : '') . $v . ($htmlon ? ']]>' : '') . "</item>\r\n";
		}
		else {
			$s .= $space . "<item id=\"$k\">\r\n" . xml_serialize ( $v, $htmlon, $isnormal, $level + 1 ) . $space . "</item>\r\n";
		}
	}
	$s = preg_replace ( "/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ' ', $s );
	return $level == 1 ? $s . "</root>" : $s;
}

class XML {
	
	var $parser;
	var $document;
	var $stack;
	var $data;
	var $last_opened_tag;
	var $isnormal;
	var $attrs = array ();
	var $failed = FALSE;

	function __construct($isnormal) {

		$this->XML ( $isnormal );
	}

	function XML($isnormal) {

		$this->isnormal = $isnormal;
		$this->parser = xml_parser_create ( 'ISO-8859-1' );
		xml_parser_set_option ( $this->parser, XML_OPTION_CASE_FOLDING, false );
		xml_set_object ( $this->parser, $this );
		xml_set_element_handler ( $this->parser, 'open', 'close' );
		xml_set_character_data_handler ( $this->parser, 'data' );
	}

	function destruct() {

		xml_parser_free ( $this->parser );
	}

	function parse(&$data) {

		$this->document = array ();
		$this->stack = array ();
		return xml_parse ( $this->parser, $data, true ) && ! $this->failed ? $this->document : '';
	}

	function open(&$parser , $tag , $attributes) {

		$this->data = '';
		$this->failed = FALSE;
		if (! $this->isnormal) {
			if (isset ( $attributes ['id'] ) && ! is_string ( $this->document [$attributes ['id']] )) {
				$this->document = &$this->document [$attributes ['id']];
			}
			else {
				$this->failed = TRUE;
			}
		}
		else {
			if (! isset ( $this->document [$tag] ) || ! is_string ( $this->document [$tag] )) {
				$this->document = &$this->document [$tag];
			}
			else {
				$this->failed = TRUE;
			}
		}
		$this->stack [] = &$this->document;
		$this->last_opened_tag = $tag;
		$this->attrs = $attributes;
	}

	function data(&$parser , $data) {

		if ($this->last_opened_tag != NULL) {
			$this->data .= $data;
		}
	}

	function close(&$parser , $tag) {

		if ($this->last_opened_tag == $tag) {
			$this->document = $this->data;
			$this->last_opened_tag = NULL;
		}
		array_pop ( $this->stack );
		if ($this->stack) {
			$this->document = &$this->stack [count ( $this->stack ) - 1];
		}
	}

}

?>